US2737455A - Ferritic creep-resisting steels - Google Patents
Ferritic creep-resisting steels Download PDFInfo
- Publication number
- US2737455A US2737455A US346255A US34625553A US2737455A US 2737455 A US2737455 A US 2737455A US 346255 A US346255 A US 346255A US 34625553 A US34625553 A US 34625553A US 2737455 A US2737455 A US 2737455A
- Authority
- US
- United States
- Prior art keywords
- creep
- ferritic
- molybdenum
- vanadium
- chromium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title description 9
- 239000010959 steel Substances 0.000 title description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 239000011572 manganese Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 229910000851 Alloy steel Inorganic materials 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000714 At alloy Inorganic materials 0.000 description 1
- XACAZEWCMFHVBX-UHFFFAOYSA-N [C].[Mo] Chemical compound [C].[Mo] XACAZEWCMFHVBX-UHFFFAOYSA-N 0.000 description 1
- VGIPUQAQWWHEMC-UHFFFAOYSA-N [V].[Mo].[Cr] Chemical compound [V].[Mo].[Cr] VGIPUQAQWWHEMC-UHFFFAOYSA-N 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
Definitions
- This invention comprises improvements relating to ferritic creep-resisting steels.
- molybdenum is invariably present, e. g. carbon-molybdenum, chromium-molybdenum, molybdenum-vanadium, chromium-molybdenum-vanadium, and other special steels.
- Molybdenum is known to be an alloying element of strategic importance and hitherto has been regarded as a metal vital to a countrys economy in so far as alloy steels suitable for high temperature applications are concerned.
- the present invention provides alloy compositions which, without entailing the use of molybdenum as an alloying constituent, have creep-resisting properties comparable with or superior to those of the known molybdenum-containing creep-resisting steels referred to above.
- the alloys provided by the invention comprise the following range of composition:
- a creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15%, silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts.
- a creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15 silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40, boron 0.003 to 0.05%, nickel 0 to 1% and the balance iron with impurities in ordinary amounts.
- a creep resistant ferritic alloy steel comprising carbon 0.06 to 0.12%, silicon 0.10 to 0.50%, manganese 0.50 to 1.0%, chromium 0.40 to 2.0%, vanadium 0.25 to 0.75%, titanium 0.075 to 0.30%, boron 0.003 to 0.01%, and the balance iron with impurities in ordinary amounts.
- a creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15%, silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts, characterised by the total absence of molybdenum from the constituents.
- a creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15 silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts, characterised by the total absence of both molybdenum and tungsten from the constituents.
Description
United States Patent FERRITIC CREEP-RESISTIN G STEELS Henry William Kirkby and Charles Sykes, Sheilielti, England, assignors to Thos. Firth & John firown Limited, Shefiield, England, a British company N 0 Drawing. Application April 1, 1953, Serial No. 346,255
Claims. (Cl. 75-426) This invention comprises improvements relating to ferritic creep-resisting steels.
It is well known that the majority of creep-resisting steels (ferritic and austenitic) contain molybdenum and this element is generally regarded as an essential constituent in such materials. In ferritic creep-resisting steels, molybdenum is invariably present, e. g. carbon-molybdenum, chromium-molybdenum, molybdenum-vanadium, chromium-molybdenum-vanadium, and other special steels.
Molybdenum is known to be an alloying element of strategic importance and hitherto has been regarded as a metal vital to a countrys economy in so far as alloy steels suitable for high temperature applications are concerned.
The present invention provides alloy compositions which, without entailing the use of molybdenum as an alloying constituent, have creep-resisting properties comparable with or superior to those of the known molybdenum-containing creep-resisting steels referred to above.
The alloys provided by the invention comprise the following range of composition:
Carbon 0.02 to 0.15%. Silicon 0.05 to 1.0%. Manganese 0.05 to 2.0%. Chromium 0.10 to 3.5%. Vanadium 0.05 to 1.0%. Titanium 0.05 to 0.40%. Boron 0.003 to 0.05%. Iron The substantial remainder.
Carbo 0.06 to 0.12%. Silicon 0.10 to 0.50%. Manganese 0.50 to 1.0%. Chromium 0.40 to 2.0%. Vanad 0.25 to 0.75%. Titanium 0.075 to 0.30%
ICC
The following stress rupture properties have been obtained on selected compositions within the range of the invention:
Hgurs to Fig.0- 0 Si, Mn, Ni Gr, v Ti, B i at Alloy peiperperper'- perpeiperpeiig g ggg" cent cent cent cent cent cent cont cent 16011 at 0.65 0.74 0.05 0.64 0.43 0.08 0.005 163. 0.35 1.02 nil 0.88 0.74 0.20 0.005 116%. 0.31 0.94 nil 0.64 0.51 0.24 0.01 300Unbroken. 0.31 0.76 nil 0.75 0. 51 0.22 0.005 389. 0.35 0.96 0.07 3.19 1.0 0.14 0.005 306Unbroken.
On alloy A, a creep test under conditions 6 tons/sq. inch at 650 C. gave a creep deformation of 0.125% in 300 hours. This compares very favourably with the creep properties of known molybdenum-vanadium creepresisting steels.
We claim:
1. A creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15%, silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts.
2. A creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15 silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40, boron 0.003 to 0.05%, nickel 0 to 1% and the balance iron with impurities in ordinary amounts.
3. A creep resistant ferritic alloy steel comprising carbon 0.06 to 0.12%, silicon 0.10 to 0.50%, manganese 0.50 to 1.0%, chromium 0.40 to 2.0%, vanadium 0.25 to 0.75%, titanium 0.075 to 0.30%, boron 0.003 to 0.01%, and the balance iron with impurities in ordinary amounts.
4. A creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15%, silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts, characterised by the total absence of molybdenum from the constituents.
5. A creep resistant ferritic alloy steel comprising carbon 0.02 to 0.15 silicon 0.05 to 1.0%, manganese 0.05 to 2.0%, chromium 0.10 to 3.5%, vanadium 0.05 to 1.0%, titanium 0.05 to 0.40%, boron 0.003 to 0.05%, and the balance iron with impurities in ordinary amounts, characterised by the total absence of both molybdenum and tungsten from the constituents.
References Cited in the file of this patent UNITED STATES PATENTS 2,480,151 Malcolm Aug. 30, 1949 2,542,220 Urban et al. Feb. 20, 1951 2,572,191 Payson Oct. 23, 1951
Claims (1)
1. A CREEP RESISTANT FERRITIC ALLOY STEEL COMPRISING CARBON 0.02 TO 0.15%, SILICON 0.05 TO 1.0%, MANGANESE 0.05 TO 2.0%, CHROMIUM 0.10 TO 3.5%, VANADIUM 0.05 TO 1.0%, TITANIUM 0.0K TO 0.40%, BORON 0.003 TO 0.05% AND THE BALANCE IRON WITH IMPURITIES IN ORDINARY AMOUNTS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US346255A US2737455A (en) | 1953-04-01 | 1953-04-01 | Ferritic creep-resisting steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US346255A US2737455A (en) | 1953-04-01 | 1953-04-01 | Ferritic creep-resisting steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2737455A true US2737455A (en) | 1956-03-06 |
Family
ID=23358607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US346255A Expired - Lifetime US2737455A (en) | 1953-04-01 | 1953-04-01 | Ferritic creep-resisting steels |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2737455A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2848323A (en) * | 1955-02-28 | 1958-08-19 | Birmingham Small Arms Co Ltd | Ferritic steel for high temperature use |
| US2875042A (en) * | 1957-02-12 | 1959-02-24 | Carpenter Steel Co | High temperature alloy steel |
| US3791818A (en) * | 1972-08-14 | 1974-02-12 | Us Air Force | Steel alloy |
| US4319934A (en) * | 1979-01-31 | 1982-03-16 | Snap-On Tools Corporation | Method of forming tools from alloy steel for severe cold forming |
| US4348229A (en) * | 1980-08-22 | 1982-09-07 | Nippon Steel Corporation | Enamelling steel sheet |
| EP0159119A1 (en) * | 1984-02-29 | 1985-10-23 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Low alloy steels for use in pressure vessels |
| US5582658A (en) * | 1990-08-17 | 1996-12-10 | Kawasaki Steel Corporation | High strength steel sheet adapted for press forming and method of producing the same |
| US5928442A (en) * | 1997-08-22 | 1999-07-27 | Snap-On Technologies, Inc. | Medium/high carbon low alloy steel for warm/cold forming |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2480151A (en) * | 1946-12-23 | 1949-08-30 | Chapman Valve Mfg Co | Metal alloy |
| US2542220A (en) * | 1948-10-05 | 1951-02-20 | Nat Lead Co | Ferritic alloy |
| US2572191A (en) * | 1949-12-16 | 1951-10-23 | Crucible Steel Co America | Alloy steel having high strength at elevated temperature |
-
1953
- 1953-04-01 US US346255A patent/US2737455A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2480151A (en) * | 1946-12-23 | 1949-08-30 | Chapman Valve Mfg Co | Metal alloy |
| US2542220A (en) * | 1948-10-05 | 1951-02-20 | Nat Lead Co | Ferritic alloy |
| US2572191A (en) * | 1949-12-16 | 1951-10-23 | Crucible Steel Co America | Alloy steel having high strength at elevated temperature |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2848323A (en) * | 1955-02-28 | 1958-08-19 | Birmingham Small Arms Co Ltd | Ferritic steel for high temperature use |
| US2875042A (en) * | 1957-02-12 | 1959-02-24 | Carpenter Steel Co | High temperature alloy steel |
| US3791818A (en) * | 1972-08-14 | 1974-02-12 | Us Air Force | Steel alloy |
| US4319934A (en) * | 1979-01-31 | 1982-03-16 | Snap-On Tools Corporation | Method of forming tools from alloy steel for severe cold forming |
| US4348229A (en) * | 1980-08-22 | 1982-09-07 | Nippon Steel Corporation | Enamelling steel sheet |
| EP0159119A1 (en) * | 1984-02-29 | 1985-10-23 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Low alloy steels for use in pressure vessels |
| US5582658A (en) * | 1990-08-17 | 1996-12-10 | Kawasaki Steel Corporation | High strength steel sheet adapted for press forming and method of producing the same |
| US5928442A (en) * | 1997-08-22 | 1999-07-27 | Snap-On Technologies, Inc. | Medium/high carbon low alloy steel for warm/cold forming |
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